Searching to find the pentaquark and its probing has a long history. About ten years ago, in the study of pentaquark, a big progress was occurred when LEPS collaborations getting started with a claim to find out strong evidence of the pentaquark with the mass of about \(1.540 GeV\)[1]}. Then, many theoretical and experimental approaches were pursued and many ideas were proposed in this field. For example, Zou and his colleagues suggested that the components of pentaquark be included with nucleon. Since the heavy quarks play an important role in stabilization of multi - quark systems and these play exactly the same role as the hydrogen molecule in QED[2]}, [3]}, [4]}, [5]}, so there are theoretical predictions about exotic hidden-charm pentaquark. In particular, the possibility existence of hidden-charm molecular baryons composed of an anti-charmed meson and a charmed baryon was systematically studied within the one boson exchange model[1]}.
